1 ! Copyright (C) 2004, 2009 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: byte-arrays arrays assocs kernel kernel.private libc math
4 namespaces make parser sequences strings words splitting math.parser
5 cpu.architecture alien alien.accessors alien.strings quotations
6 layouts system compiler.units io io.files io.encodings.binary
7 io.streams.memory accessors combinators effects continuations fry
8 classes vocabs vocabs.loader words.symbol ;
25 : little-endian? ( -- ? ) 1 <int> *char 1 = ; foldable
27 TUPLE: abstract-c-type
28 { class class initial: object }
29 { boxed-class class initial: object }
30 { boxer-quot callable }
31 { unboxer-quot callable }
37 TUPLE: c-type < abstract-c-type
40 { rep initial: int-rep }
43 : <c-type> ( -- type )
49 c-types [ H{ } assoc-like ] change
52 ERROR: no-c-type name ;
54 PREDICATE: c-type-word < word
57 UNION: c-type-name string c-type-word ;
60 GENERIC: c-type ( name -- type ) foldable
62 GENERIC: resolve-pointer-type ( name -- c-type )
64 M: word resolve-pointer-type
65 dup "pointer-c-type" word-prop
66 [ ] [ drop void* ] ?if ;
67 M: string resolve-pointer-type
68 dup "*" append dup c-types get at
71 c-types get at dup c-type-name?
72 [ resolve-pointer-type ] [ drop void* ] if
75 : resolve-typedef ( name -- type )
76 dup c-type-name? [ c-type ] when ;
78 : parse-array-type ( name -- dims type )
80 [ [ "]" ?tail drop string>number ] map ] dip ;
82 M: string c-type ( name -- type )
83 CHAR: ] over member? [
84 parse-array-type prefix
86 dup c-types get at [ ] [
87 "*" ?tail [ resolve-pointer-type ] [ no-c-type ] if
92 "c-type" word-prop resolve-typedef ;
94 : void? ( c-type -- ? )
95 { void "void" } member? ;
97 GENERIC: c-struct? ( type -- ? )
101 M: c-type-name c-struct?
102 dup void? [ drop f ] [ c-type c-struct? ] if ;
104 ! These words being foldable means that words need to be
105 ! recompiled if a C type is redefined. Even so, folding the
106 ! size facilitates some optimizations.
107 GENERIC: heap-size ( type -- size ) foldable
109 M: c-type-name heap-size c-type heap-size ;
111 M: abstract-c-type heap-size size>> ;
113 GENERIC: require-c-array ( c-type -- )
115 M: array require-c-array first require-c-array ;
117 GENERIC: c-array-constructor ( c-type -- word )
119 GENERIC: c-(array)-constructor ( c-type -- word )
121 GENERIC: c-direct-array-constructor ( c-type -- word )
123 GENERIC: <c-array> ( len c-type -- array )
125 M: c-type-name <c-array>
126 c-array-constructor execute( len -- array ) ; inline
128 GENERIC: (c-array) ( len c-type -- array )
130 M: c-type-name (c-array)
131 c-(array)-constructor execute( len -- array ) ; inline
133 GENERIC: <c-direct-array> ( alien len c-type -- array )
135 M: c-type-name <c-direct-array>
136 c-direct-array-constructor execute( alien len -- array ) ; inline
138 : malloc-array ( n type -- alien )
139 [ heap-size calloc ] [ <c-direct-array> ] 2bi ; inline
141 : (malloc-array) ( n type -- alien )
142 [ heap-size * malloc ] [ <c-direct-array> ] 2bi ; inline
144 GENERIC: c-type-class ( name -- class )
146 M: abstract-c-type c-type-class class>> ;
148 M: c-type-name c-type-class c-type c-type-class ;
150 GENERIC: c-type-boxed-class ( name -- class )
152 M: abstract-c-type c-type-boxed-class boxed-class>> ;
154 M: c-type-name c-type-boxed-class c-type c-type-boxed-class ;
156 GENERIC: c-type-boxer ( name -- boxer )
158 M: c-type c-type-boxer boxer>> ;
160 M: c-type-name c-type-boxer c-type c-type-boxer ;
162 GENERIC: c-type-boxer-quot ( name -- quot )
164 M: abstract-c-type c-type-boxer-quot boxer-quot>> ;
166 M: c-type-name c-type-boxer-quot c-type c-type-boxer-quot ;
168 GENERIC: c-type-unboxer ( name -- boxer )
170 M: c-type c-type-unboxer unboxer>> ;
172 M: c-type-name c-type-unboxer c-type c-type-unboxer ;
174 GENERIC: c-type-unboxer-quot ( name -- quot )
176 M: abstract-c-type c-type-unboxer-quot unboxer-quot>> ;
178 M: c-type-name c-type-unboxer-quot c-type c-type-unboxer-quot ;
180 GENERIC: c-type-rep ( name -- rep )
182 M: c-type c-type-rep rep>> ;
184 M: c-type-name c-type-rep c-type c-type-rep ;
186 GENERIC: c-type-getter ( name -- quot )
188 M: c-type c-type-getter getter>> ;
190 M: c-type-name c-type-getter c-type c-type-getter ;
192 GENERIC: c-type-setter ( name -- quot )
194 M: c-type c-type-setter setter>> ;
196 M: c-type-name c-type-setter c-type c-type-setter ;
198 GENERIC: c-type-align ( name -- n )
200 M: abstract-c-type c-type-align align>> ;
202 M: c-type-name c-type-align c-type c-type-align ;
204 GENERIC: c-type-stack-align? ( name -- ? )
206 M: c-type c-type-stack-align? stack-align?>> ;
208 M: c-type-name c-type-stack-align? c-type c-type-stack-align? ;
210 : c-type-box ( n type -- )
211 [ c-type-rep ] [ c-type-boxer [ "No boxer" throw ] unless* ] bi
214 : c-type-unbox ( n ctype -- )
215 [ c-type-rep ] [ c-type-unboxer [ "No unboxer" throw ] unless* ] bi
218 GENERIC: box-parameter ( n ctype -- )
220 M: c-type box-parameter c-type-box ;
222 M: c-type-name box-parameter c-type box-parameter ;
224 GENERIC: box-return ( ctype -- )
226 M: c-type box-return f swap c-type-box ;
228 M: c-type-name box-return c-type box-return ;
230 GENERIC: unbox-parameter ( n ctype -- )
232 M: c-type unbox-parameter c-type-unbox ;
234 M: c-type-name unbox-parameter c-type unbox-parameter ;
236 GENERIC: unbox-return ( ctype -- )
238 M: c-type unbox-return f swap c-type-unbox ;
240 M: c-type-name unbox-return c-type unbox-return ;
242 GENERIC: stack-size ( type -- size ) foldable
244 M: c-type-name stack-size c-type stack-size ;
246 M: c-type stack-size size>> cell align ;
250 M: value-type c-type-rep drop int-rep ;
252 M: value-type c-type-getter
253 drop [ swap <displaced-alien> ] ;
255 M: value-type c-type-setter ( type -- quot )
256 [ c-type-getter ] [ c-type-unboxer-quot ] [ heap-size ] tri
257 '[ @ swap @ _ memcpy ] ;
259 GENERIC: byte-length ( seq -- n ) flushable
261 M: byte-array byte-length length ; inline
263 M: f byte-length drop 0 ; inline
265 : c-getter ( name -- quot )
267 [ "Cannot read struct fields with this type" throw ]
270 : c-type-getter-boxer ( name -- quot )
271 [ c-getter ] [ c-type-boxer-quot ] bi append ;
273 : c-setter ( name -- quot )
275 [ "Cannot write struct fields with this type" throw ]
278 : <c-object> ( type -- array )
279 heap-size <byte-array> ; inline
281 : (c-object) ( type -- array )
282 heap-size (byte-array) ; inline
284 : malloc-object ( type -- alien )
285 1 swap heap-size calloc ; inline
287 : (malloc-object) ( type -- alien )
288 heap-size malloc ; inline
290 : malloc-byte-array ( byte-array -- alien )
291 dup byte-length [ nip malloc dup ] 2keep memcpy ;
293 : memory>byte-array ( alien len -- byte-array )
294 [ nip (byte-array) dup ] 2keep memcpy ;
296 : malloc-string ( string encoding -- alien )
297 string>alien malloc-byte-array ;
299 M: memory-stream stream-read
301 [ index>> ] [ alien>> ] bi <displaced-alien>
302 swap memory>byte-array
303 ] [ [ + ] change-index drop ] 2bi ;
305 : byte-array>memory ( byte-array base -- )
306 swap dup byte-length memcpy ; inline
308 : array-accessor ( type quot -- def )
310 \ swap , [ heap-size , [ * >fixnum ] % ] [ % ] bi*
313 GENERIC: typedef ( old new -- )
315 PREDICATE: typedef-word < c-type-word
316 "c-type" word-prop c-type-name? ;
318 M: string typedef ( old new -- ) c-types get set-at ;
319 M: word typedef ( old new -- )
321 [ nip define-symbol ]
323 [ swap "c-type" set-word-prop ]
325 swap dup c-type-name? [
327 "pointer-c-type" set-word-prop
332 TUPLE: long-long-type < c-type ;
334 : <long-long-type> ( -- type )
337 M: long-long-type unbox-parameter ( n type -- )
338 c-type-unboxer %unbox-long-long ;
340 M: long-long-type unbox-return ( type -- )
341 f swap unbox-parameter ;
343 M: long-long-type box-parameter ( n type -- )
344 c-type-boxer %box-long-long ;
346 M: long-long-type box-return ( type -- )
347 f swap box-parameter ;
349 : define-deref ( name -- )
350 [ CHAR: * prefix "alien.c-types" create ] [ c-getter 0 prefix ] bi
351 (( c-ptr -- value )) define-inline ;
353 : define-out ( name -- )
354 [ "alien.c-types" constructor-word ]
355 [ dup c-setter '[ _ <c-object> [ 0 @ ] keep ] ] bi
356 (( value -- c-ptr )) define-inline ;
358 : >c-bool ( ? -- int ) 1 0 ? ; inline
360 : c-bool> ( int -- ? ) 0 = not ; inline
362 : define-primitive-type ( type name -- )
364 [ name>> define-deref ]
365 [ name>> define-out ]
368 : malloc-file-contents ( path -- alien len )
369 binary file-contents [ malloc-byte-array ] [ length ] bi ;
371 : if-void ( type true false -- )
372 pick void? [ drop nip call ] [ nip call ] if ; inline
374 CONSTANT: primitive-types
386 ptrdiff_t intptr_t size_t
393 [ alien-cell ] >>getter
394 [ [ >c-ptr ] 2dip set-alien-cell ] >>setter
395 bootstrap-cell >>size
396 bootstrap-cell >>align
397 [ >c-ptr ] >>unboxer-quot
399 "alien_offset" >>unboxer
400 \ void* define-primitive-type
404 integer >>boxed-class
405 [ alien-signed-8 ] >>getter
406 [ set-alien-signed-8 ] >>setter
409 "box_signed_8" >>boxer
410 "to_signed_8" >>unboxer
411 \ longlong define-primitive-type
415 integer >>boxed-class
416 [ alien-unsigned-8 ] >>getter
417 [ set-alien-unsigned-8 ] >>setter
420 "box_unsigned_8" >>boxer
421 "to_unsigned_8" >>unboxer
422 \ ulonglong define-primitive-type
426 integer >>boxed-class
427 [ alien-signed-cell ] >>getter
428 [ set-alien-signed-cell ] >>setter
429 bootstrap-cell >>size
430 bootstrap-cell >>align
431 "box_signed_cell" >>boxer
432 "to_fixnum" >>unboxer
433 \ long define-primitive-type
437 integer >>boxed-class
438 [ alien-unsigned-cell ] >>getter
439 [ set-alien-unsigned-cell ] >>setter
440 bootstrap-cell >>size
441 bootstrap-cell >>align
442 "box_unsigned_cell" >>boxer
444 \ ulong define-primitive-type
448 integer >>boxed-class
449 [ alien-signed-4 ] >>getter
450 [ set-alien-signed-4 ] >>setter
453 "box_signed_4" >>boxer
454 "to_fixnum" >>unboxer
455 \ int define-primitive-type
459 integer >>boxed-class
460 [ alien-unsigned-4 ] >>getter
461 [ set-alien-unsigned-4 ] >>setter
464 "box_unsigned_4" >>boxer
466 \ uint define-primitive-type
471 [ alien-signed-2 ] >>getter
472 [ set-alien-signed-2 ] >>setter
475 "box_signed_2" >>boxer
476 "to_fixnum" >>unboxer
477 \ short define-primitive-type
482 [ alien-unsigned-2 ] >>getter
483 [ set-alien-unsigned-2 ] >>setter
486 "box_unsigned_2" >>boxer
488 \ ushort define-primitive-type
493 [ alien-signed-1 ] >>getter
494 [ set-alien-signed-1 ] >>setter
497 "box_signed_1" >>boxer
498 "to_fixnum" >>unboxer
499 \ char define-primitive-type
504 [ alien-unsigned-1 ] >>getter
505 [ set-alien-unsigned-1 ] >>setter
508 "box_unsigned_1" >>boxer
510 \ uchar define-primitive-type
513 [ alien-unsigned-1 c-bool> ] >>getter
514 [ [ >c-bool ] 2dip set-alien-unsigned-1 ] >>setter
517 "box_boolean" >>boxer
518 "to_boolean" >>unboxer
519 \ bool define-primitive-type
523 math:float >>boxed-class
524 [ alien-float ] >>getter
525 [ [ >float ] 2dip set-alien-float ] >>setter
531 [ >float ] >>unboxer-quot
532 \ float define-primitive-type
536 math:float >>boxed-class
537 [ alien-double ] >>getter
538 [ [ >float ] 2dip set-alien-double ] >>setter
542 "to_double" >>unboxer
544 [ >float ] >>unboxer-quot
545 \ double define-primitive-type
547 \ long \ ptrdiff_t typedef
548 \ long \ intptr_t typedef
549 \ ulong \ size_t typedef
550 ] with-compilation-unit